CN107484210A - A kind of data transmission method and device - Google Patents
A kind of data transmission method and device Download PDFInfo
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- CN107484210A CN107484210A CN201610398613.4A CN201610398613A CN107484210A CN 107484210 A CN107484210 A CN 107484210A CN 201610398613 A CN201610398613 A CN 201610398613A CN 107484210 A CN107484210 A CN 107484210A
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- local service
- target
- address
- service server
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0077—Transmission or use of information for re-establishing the radio link of access information of target access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/10—Mapping addresses of different types
- H04L61/103—Mapping addresses of different types across network layers, e.g. resolution of network layer into physical layer addresses or address resolution protocol [ARP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
- H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
Abstract
The invention discloses a kind of data transmission method and device, to ensure the continuity of local service, avoids UE that problem of service interruption occurs in switchover procedure between base station.This method includes:In UE from during source base station switches to target BS, the target BS obtains the IP address information of the UE, and determines the local service server that the UE is accessed;The target BS is broadcast to the local service server when it is determined that meeting preparatory condition, according to the IP address information structuring gratuitous ARP packet of the UE, and by the gratuitous ARP packet.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of data transmission method and device.
Background technology
In the existing network architecture, business platform is deployed in after core network.With local service diverter function
The it is proposed of (Traffic Offload Function, TOF), user equipment (User Equipment, UE) is to local service
Access need not can realize the access nearby to local service by core net, and this is to reducing traffic delay and improving business
Perceive it is very good, especially for high bandwidth, the business of low latency.
Wherein, local service diverter function can be deployed in mobile edge calculations (Mobile Edge Compute, MEC)
On server, it can also be deployed on base station, respectively there is advantage and disadvantage.
In the case of local service diverter function is deployed in base station, the service surface of base station (e-NB) can include TOF realities
Body, to realize local service diverter function.However, when the ue moves, there can be business discontinuity problem.Specifically, when
UE from source base station be switched to target BS when, local service server can not be known which the local service data of the UE are sent to
One base station, thus the local service that UE can be caused to access interrupts.
The content of the invention
The embodiments of the invention provide a kind of data transmission method and device, to ensure the continuity of local service, keeps away
Exempt from UE and problem of service interruption occurs in switchover procedure between base station.
A kind of data transmission method provided in an embodiment of the present invention includes:
In UE from during source base station switches to target BS, the target BS obtains the IP address letter of the UE
Breath, and determine the local service server that the UE is accessed;
The target BS solves when it is determined that meeting preparatory condition according to the free address of the IP address information structuring of the UE
Agreement (Address Resolution Protocol, ARP) message is analysed, and the gratuitous ARP packet is broadcast to the local
Service server.
The data transmission method provided in an embodiment of the present invention, in UE from during source base station switches to target BS,
Target BS obtains UE IP address information, and determines the local service server that UE is accessed, and then target BS is full when determining
During sufficient preparatory condition, according to the IP address information structuring gratuitous ARP packet of the UE, and the gratuitous ARP packet is broadcast to
The local service server that the UE is accessed, due to inherently carrying the mac address information of target BS in gratuitous ARP packet,
So that after the local service server that the UE is accessed receives the gratuitous ARP packet, can be according to the gratuitous ARP report
Text establishes the corresponding relation of the IP address of the UE and the MAC Address of the target BS, and then exactly by the business of the UE
Data are sent to the target BS, it is ensured that the continuity of local service, the business for avoiding UE access are interrupted.The party
Method is realized simply, easy to spread, it is not necessary to local service server is improved, and does not interfere with UE and switches between base station
When normal access to distal end business.
It is preferred that the target BS obtains the IP address information of the UE, and determine the local service that the UE is accessed
Server, specifically include:
The target BS receives the business datum message for the UE that the source base station is sent;
The target BS obtains the IP address information of the UE and the UE from the business datum message of the UE
The IP address information of the local service server of access, and according to determining the IP address information of the local service server
The local service server that UE is accessed.
It is preferred that the preparatory condition includes:
The target BS has a local service diverter function, and the configuration information of the target BS include it is described
The IP address information of local service server.
It is preferred that the target BS specifically includes according to the IP address information structuring gratuitous ARP packet of the UE:
Source IP address and target ip address extend this as to the IP address of the UE, and by source media access control MAC
Address extends this as the MAC Address of the target BS, and destination-mac address is extended this as into broadcast address.
It is preferred that the gratuitous ARP packet is broadcast to after the local service server by the target BS, it is somebody's turn to do
Method also includes:
The target BS receives what the local service server was sent according to the mac address information of the target BS
The local service data message of the UE.
A kind of data transmission device provided in an embodiment of the present invention, including:
Acquiring unit, for, from during source base station switches to target BS, obtaining the UE's in user equipment (UE)
IP address information, and determine the local service server that the UE is accessed;
Transmitting element, for when it is determined that meeting preparatory condition, according to the IP address information structuring gratuitous ARP report of the UE
Text, and the gratuitous ARP packet is broadcast to the local service server.
It is preferred that the acquiring unit is specifically used for:
Receive the business datum message for the UE that the source base station is sent;
The IP address information of the UE and the local industry of UE access are obtained from the business datum message of the UE
It is engaged in the IP address information of server, and the local that the UE accesses is determined according to the IP address information of the local service server
Service server.
It is preferred that the preparatory condition includes:
The device has local service diverter function, and the configuration information of the device includes the local service service
The IP address information of device.
It is preferred that when the transmitting element is according to the IP address information structuring gratuitous ARP packet of the UE, it is specifically used for:
Source IP address and target ip address extend this as to the IP address of the UE, and by source media access control MAC
Address extends this as the MAC Address of the target BS, and destination-mac address is extended this as into broadcast address.
It is preferred that after the gratuitous ARP packet is broadcast to the local service server by the transmitting element, also use
In:
Receive the local service for the UE that the local service server is sent according to the mac address information of described device
Data message.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can be with root
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of network architecture schematic diagram provided in an embodiment of the present invention;
Fig. 2 is a kind of schematic flow sheet of data transmission method provided in an embodiment of the present invention;
Fig. 3 is the schematic flow sheet of another data transmission method provided in an embodiment of the present invention;
Fig. 4 is a kind of structural representation of data transmission device provided in an embodiment of the present invention.
Embodiment
The embodiments of the invention provide a kind of data transmission method and device, to ensure the continuity of local service, keeps away
Exempt from UE and problem of service interruption occurs in switchover procedure between base station.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Fig. 1 show network architecture schematic diagram when local service diverter function is deployed in base station.
For the base station (e-NB) with local service diverter function, with the e-NB in Fig. 11Exemplified by, its service surface is except bag
Include medium education (Medium Access Control, MAC), wireless spread-spectrum technology (Radio Link Control,
RLC), PDCP (Packet Data Convergence Protocol, PDCP) and GPRS user planes tunnel
Outside the functional entitys such as agreement (GPRS Tunneling Protocol for the User plane, GTP-U), also TOF work(
Can entity.TOF functional entitys are between PDCP functional entitys and GTP-U functional entitys.Each e-NB passes through transmission network (such as PTN
Network) it is connected with its local service server, it is deployed in close to mobile edge side;Packet-based core networks (the Evolved of evolution
Packet Core, EPC) with its after distal end service server be deployed in higher network layer (such as core computer room).
The process that e-NB carries out local service shunting is as follows:
(1) operation is that e-NB configures local service template with management (Operations and Management, OM) entity
Information (such as local service server ip address, IP address prefix);
(2) for descending UE service surfaces data, TOF functional entitys are by UE service surface data penetration transmission to UE;
(3) for uplink UE service surface data, TOF functional entitys identification service surface data message, if the mesh that UE is accessed
Address be local service server address, then the service surface data message is sent to local service server, is no longer pass through
The processing of GTP-U functional entitys;Otherwise, GTP-U functional entitys are transferred to handle.
Specifically, for local service, its data flow is referring to the data flow 1 shown in Fig. 1, its uplink service face number
It is according to the network node that flows through successively of flow direction:In physical layer (Physical Layer, PHY) entity, e-NB in UE, e-NB
The PDCP entities in RLC entities, e-NB, the TOF entities in e-NB, local service server in MAC entity, e-NB;Under it
The network node that row service surface data flow flows through successively is:In TOF entities, e-NB in local service server, e-NB
RLC entities in PDCP entities, e-NB, the MAC entity in e-NB, PHY entities, UE in e-NB.
For distal end business, its data flow is referring to the data flow 2 shown in Fig. 1, its uplink service face data flow
The network node flowed through successively is:PHY entities in UE, e-NB, the MAC entity in e-NB, RLC entities, e-NB in e-NB
In PDCP entities, the TOF entities in e-NB, the GTP-U entities in e-NB, EPC, distal end service server;Its downlink business
The network node that face data flow flows through successively is:In GTP-U entities, e-NB in distal end service server, EPC, e-NB
The RLC entities in PDCP entities, e-NB, the MAC entity in e-NB, PHY entities, UE in e-NB in TOF entities, e-NB.
By the above method, the shunting of local service is realized.When UE performs switchover procedure between base station, can use as follows
Data transmission method, so as to ensure the continuity of local service in local service branching process, avoid in the business that UE is accessed
It is disconnected.
In target BS side, referring to Fig. 2, a kind of data transmission method provided in an embodiment of the present invention, including:
S101, in UE from during source base station switches to target BS, the target BS is with obtaining the IP of the UE
Location information, and determine the local service server that the UE is accessed;
S102, the target BS are free according to the IP address information structuring of the UE when it is determined that meeting preparatory condition
ARP messages, and the gratuitous ARP packet is broadcast to the local service server.
It is preferred that the target BS obtains the IP address information of the UE, and determine the local service that the UE is accessed
Server, specifically include:
The target BS receives the business datum message for the UE that the source base station is sent;
Here, that is, in UE from during source base station switches to target BS, source base station is by the business datum of the UE
It is transmitted to target BS.
The target BS obtains the IP address information of the UE and the UE from the business datum message of the UE
The IP address information of the local service server of access, and according to determining the IP address information of the local service server
The local service server that UE is accessed.
It is preferred that the preparatory condition includes:
The target BS has a local service diverter function, and the configuration information of the target BS include it is described
The IP address information for the local service server that UE is accessed.
That is, the target BS includes TOF entities, and the IP of local service server that access of the UE
Location information is in the configured list of the target BS.When meeting the preparatory condition, show that UE accesses local service, so as to
Target BS by construct gratuitous ARP packet by the IP address information of the UE be broadcast to the UE access local service server,
The IP address and target base of the UE can be established after the gratuitous ARP packet so that the UE local service servers accessed receive
The corresponding relation for the MAC Address stood, and then the local service data of the UE are sent to the target BS rather than the source base
Stand, the downlink service data of the UE is finally sent to the UE by the target BS so that the UE can normally access local industry
Business.
As a kind of implementation, the target BS is according to the IP address information structuring gratuitous ARP packet of the UE, tool
Body includes:
Source IP address and target ip address extend this as to the IP address of the UE, and by source media access control MAC
Address extends this as the MAC Address of the target BS, and destination-mac address is extended this as into broadcast address.
So as to which target BS can will be cut into the target BS by broadcast them gratuitous ARP packet from source base station
The IP address information for accessing the UE of local service notifies the local service server accessed to the UE.
It should be noted that in above-mentioned data transmission method, in UE from during source base station switches to target BS, mesh
After mark base station obtains the IP address information of the UE, according to the IP address information structuring gratuitous ARP packet of the UE, and exempt from described
Take ARP message broadcastings to the local service server, be to ensure that the downlink service data of the UE can be kept away with normal transmission
Exempt from service disconnection, that is, in order that the local service server for obtaining UE access can be accurate by the downlink service data of the UE
Ground is sent to the target BS, so as to which the downlink service data of the UE is passed through into the UE by the TOF entities in target BS.
Certainly, in UE from during source base station switches to target BS, the processing for the uplink business data of the UE
Process is as follows:The local service service of UE access is obtained in the business datum message for the UE that target BS is sent from source base station
After the IP address of device, the uplink business data of the UE is sent to the sheet of UE access by the TOF entities in the target BS
Ground service server, to ensure that uplink business data can avoid service disconnection with normal transmission.
It can be seen that in UE moving process, i.e. for UE from during source base station switches to target BS, either UE's is up
Service surface data or downlink business face data, pass through data transmission method provided in an embodiment of the present invention and relevant treatment mistake
Journey, it can be ensured that the continuity of local service, the service disconnection for avoiding UE from accessing.
And the local service server side that the corresponding UE is accessed, referring to Fig. 3, a kind of data provided in an embodiment of the present invention
Transmission method, including:
S201, local service server receive the gratuitous ARP packet of the target BS broadcast of UE switchings, wherein, it is described to exempt from
Expense ARP messages be the target BS when it is determined that meeting preparatory condition according to the IP address information structuring of the UE;
The local service data message of the UE is sent to the target BS by S202, the local service server,
The shunting of local service data is realized by the target BS.
It is preferred that the preparatory condition includes:The target BS has local service diverter function, and the target
The configuration information of base station includes the IP address information of the local service server.
As a kind of implementation, the form of the gratuitous ARP packet is as follows:Source IP address and target ip address are institute
UE IP address is stated, source MAC is the IP address of the target BS, and destination-mac address is broadcast address.
So as to which the local service server therefrom obtains after the gratuitous ARP packet of target BS broadcast is received
The IP address information of the UE and the mac address information of the target BS, then establish the IP address and target of the UE
The corresponding relation of the MAC Address of base station, so as to which local service server be able to will be directed to according to the MAC Address of the target BS
The downlink service data of the UE is sent to the target BS.Wherein, the corresponding relation of the IP address of the UE and MAC Address, example
It can such as be stored in the ARP information list prestored.
So as to, it is preferred that the target BS by the gratuitous ARP packet be broadcast to the local service server it
Afterwards, in addition to procedure below:
The target BS receives what the local service server was sent according to the mac address information of the target BS
The local service data message of the UE.Afterwards, the target BS is by the TOF entities in the target BS, by the UE's
Local service data message is sent to the UE, that is, realizes the shunting of local service.
Referring to Fig. 4, a kind of data transmission device provided in an embodiment of the present invention, including:
Acquiring unit 31, for, from during source base station switches to target BS, obtaining the UE in user equipment (UE)
IP address information, and determine the local service server that the UE is accessed;
Transmitting element 32, for when it is determined that meeting preparatory condition, according to the IP address information structuring gratis of the UE
Location analysis protocol ARP messages, and the gratuitous ARP packet is broadcast to the local service server.
The device for example can be base station.
It is preferred that the acquiring unit 31 is specifically used for:
Receive the business datum message for the UE that the source base station is sent;
The IP address information of the UE and the local industry of UE access are obtained from the business datum message of the UE
It is engaged in the IP address information of server, and the local that the UE accesses is determined according to the IP address information of the local service server
Service server.
It is preferred that the preparatory condition includes:
The device has local service diverter function, and the configuration information of the device includes the local service service
The IP address information of device.
It is preferred that when the transmitting element 32 is according to the IP address information structuring gratuitous ARP packet of the UE, it is specific to use
In:
Source IP address and target ip address extend this as to the IP address of the UE, and by source media access control MAC
Address extends this as the MAC Address of the target BS, and destination-mac address is extended this as into broadcast address.
It is preferred that after the gratuitous ARP packet is broadcast to the local service server by the transmitting element 32, also
For:
Receive the local service for the UE that the local service server is sent according to the mac address information of described device
Data message.
The embodiment of the present invention, above-mentioned each functional unit can be realized by entity devices such as specific hardware processors.
It should be understood by those skilled in the art that, embodiments of the invention can be provided as method, system or computer program
Product.Therefore, the present invention can use the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.Moreover, the present invention can use the computer for wherein including computer usable program code in one or more
The shape for the computer program product that usable storage medium is implemented on (including but is not limited to magnetic disk storage and optical memory etc.)
Formula.
The present invention is the flow with reference to method according to embodiments of the present invention, equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that can be by every first-class in computer program instructions implementation process figure and/or block diagram
Journey and/or the flow in square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided
The processors of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced by the instruction of computer or the computing device of other programmable data processing devices for real
The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which produces, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, so as in computer or
The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in individual square frame or multiple square frames.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (10)
1. a kind of data transmission method, it is characterised in that this method includes:
In user equipment (UE) from during source base station switches to target BS, the target BS obtains the IP address of the UE
Information, and determine the local service server that the UE is accessed;
The target BS is assisted when it is determined that meeting preparatory condition according to the free address resolution of the IP address information structuring of the UE
ARP messages are discussed, and the gratuitous ARP packet is broadcast to the local service server.
2. according to the method for claim 1, it is characterised in that the target BS obtains the IP address information of the UE,
And the local service server that the UE is accessed is determined, specifically include:
The target BS receives the business datum message for the UE that the source base station is sent;
The target BS obtains the IP address information of the UE from the business datum message of the UE and the UE is accessed
Local service server IP address information, and determine that the UE is visited according to the IP address information of the local service server
The local service server asked.
3. according to the method for claim 1, it is characterised in that the preparatory condition includes:
The target BS has local service diverter function, and the configuration information of the target BS includes the local
The IP address information of service server.
4. according to the method for claim 1, it is characterised in that the target BS is according to the IP address information structure of the UE
Gratuitous ARP packet is made, is specifically included:
Source IP address and target ip address extend this as to the IP address of the UE, and by source MAC address
The MAC Address of the target BS is extended this as, destination-mac address is extended this as into broadcast address.
5. according to the method for claim 4, it is characterised in that the gratuitous ARP packet is broadcast to by the target BS
After the local service server, this method also includes:
The target BS receives the local service server according to being sent the mac address information of the target BS
UE local service data message.
6. a kind of data transmission device, it is characterised in that the device includes:
Acquiring unit, in user equipment (UE) from during source base station switches to target BS, with obtaining the IP of the UE
Location information, and determine the local service server that the UE is accessed;
Transmitting element, for when it is determined that meeting preparatory condition, according to the free address resolution of IP address information structuring of the UE
Agreement ARP messages, and the gratuitous ARP packet is broadcast to the local service server.
7. device according to claim 6, it is characterised in that the acquiring unit is specifically used for:
Receive the business datum message for the UE that the source base station is sent;
The IP address information of the UE and the local service clothes of UE access are obtained from the business datum message of the UE
It is engaged in the IP address information of device, and the local service that the UE accesses is determined according to the IP address information of the local service server
Server.
8. device according to claim 6, it is characterised in that the preparatory condition includes:
The device has local service diverter function, and the configuration information of the device includes the local service server
IP address information.
9. device according to claim 6, it is characterised in that the transmitting element is according to the IP address information structure of the UE
When making gratuitous ARP packet, it is specifically used for:
Source IP address and target ip address extend this as to the IP address of the UE, and by source MAC address
The MAC Address of the target BS is extended this as, destination-mac address is extended this as into broadcast address.
10. device according to claim 9, it is characterised in that the gratuitous ARP packet is broadcast to by the transmitting element
After the local service server, it is additionally operable to:
Receive the local service data for the UE that the local service server is sent according to the mac address information of described device
Message.
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